Created
June 6, 2022 03:07
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Code Golf - Interval between two musical notes
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| f=c=>{for(s=0,i=0;c[i];i++){x=c.charCodeAt(i);s+=i?((x^3024)%3-1)*(((x&12)==8)+1)*7:(x+1&15)*2%7}return s},d=(l,r)=>("mmmmPPPMMMM"[(s=f(r)-f(l))+5]||(s<0?"d":"A").repeat(-~(s<0?-s:s)/7))+(((s*4%7)+7)%7+1) | |
| // > d("B#","Fb") | |
| // "ddd5" | |
| // Supported characters: | |
| // CDEFGABcdefgabＣＤＥＦＧＡＢｃｄｅｆｇａｂ | |
| // 𝄫♭bｂ♮♯#＃𝄪xｘ |
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